FR2578702B1 - CONTROL VOLTAGE GENERATOR CIRCUIT FOR OPERATING A NOISE REDUCING CIRCUIT IN A STEREO RECEIVER WITH FREQUENCY MODULATION - Google Patents

CONTROL VOLTAGE GENERATOR CIRCUIT FOR OPERATING A NOISE REDUCING CIRCUIT IN A STEREO RECEIVER WITH FREQUENCY MODULATION

Info

Publication number
FR2578702B1
FR2578702B1 FR868603107A FR8603107A FR2578702B1 FR 2578702 B1 FR2578702 B1 FR 2578702B1 FR 868603107 A FR868603107 A FR 868603107A FR 8603107 A FR8603107 A FR 8603107A FR 2578702 B1 FR2578702 B1 FR 2578702B1
Authority
FR
France
Prior art keywords
circuit
operating
control voltage
voltage generator
frequency modulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
FR868603107A
Other languages
French (fr)
Other versions
FR2578702A1 (en
Inventor
Satoru Tazaki
Yasuhiro Yoshioka
Kiyoshi Amazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clarion Co Ltd filed Critical Clarion Co Ltd
Publication of FR2578702A1 publication Critical patent/FR2578702A1/en
Application granted granted Critical
Publication of FR2578702B1 publication Critical patent/FR2578702B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
    • H04H40/72—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for noise suppression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
    • H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
    • H04B1/1676—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal of the sum or difference signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Noise Elimination (AREA)
FR868603107A 1985-03-06 1986-03-05 CONTROL VOLTAGE GENERATOR CIRCUIT FOR OPERATING A NOISE REDUCING CIRCUIT IN A STEREO RECEIVER WITH FREQUENCY MODULATION Expired - Lifetime FR2578702B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60042822A JPS61202537A (en) 1985-03-06 1985-03-06 Stereo noise reduction circuit in fm stereo

Publications (2)

Publication Number Publication Date
FR2578702A1 FR2578702A1 (en) 1986-09-12
FR2578702B1 true FR2578702B1 (en) 1992-01-03

Family

ID=12646643

Family Applications (1)

Application Number Title Priority Date Filing Date
FR868603107A Expired - Lifetime FR2578702B1 (en) 1985-03-06 1986-03-05 CONTROL VOLTAGE GENERATOR CIRCUIT FOR OPERATING A NOISE REDUCING CIRCUIT IN A STEREO RECEIVER WITH FREQUENCY MODULATION

Country Status (6)

Country Link
US (1) US4694500A (en)
JP (1) JPS61202537A (en)
DE (1) DE3607433A1 (en)
FR (1) FR2578702B1 (en)
GB (1) GB2173976B (en)
SE (1) SE465344B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0422584Y2 (en) * 1987-02-13 1992-05-25
JPS6454827A (en) * 1987-08-25 1989-03-02 Toshiba Corp Fm demodulation output processing circuit
US5113446A (en) * 1990-12-17 1992-05-12 Ford Motor Company Stereo blend controller for FM receivers
US5408685A (en) * 1992-04-06 1995-04-18 Ford Motor Company Multipath detector using phase comparison of stereo pilot signal
US5249233A (en) * 1992-04-06 1993-09-28 Ford Motor Company Multipath noise minimizer for radio receiver
US5432854A (en) * 1993-02-25 1995-07-11 Chrysler Corporation Stereo FM receiver, noise control circuit therefor
US5701345A (en) * 1996-03-25 1997-12-23 Delco Electronics Corporation Multipath interference reduction system and method
JP3675179B2 (en) * 1998-07-17 2005-07-27 三菱電機株式会社 Audio signal denoising device
US8023918B2 (en) * 2008-02-13 2011-09-20 Silicon Laboratories, Inc. Methods and systems for stereo noise mitigation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54122017A (en) * 1978-03-16 1979-09-21 Clarion Co Ltd Noise reducing circuit
US4416024A (en) * 1979-12-17 1983-11-15 Sanyo Electric Co., Inc. Distortion reducing circuit in FM receiver
US4390749A (en) * 1981-04-13 1983-06-28 Superscope, Inc. Noise control system for FM radio
US4408098A (en) * 1981-06-18 1983-10-04 U.S. Philips Corporation Receiver with field-strength dependent noise reduction control
JPS57212830A (en) * 1981-06-25 1982-12-27 Nissan Motor Co Ltd Radio receiver for car
NL8203384A (en) * 1982-08-31 1984-03-16 Philips Nv FM STEREO RECEIVER.
JPS6053342A (en) * 1983-09-02 1985-03-27 Nec Corp Control circuit
JPS60165834A (en) * 1984-02-09 1985-08-29 Clarion Co Ltd Automatic frequency control circuit

Also Published As

Publication number Publication date
JPS61202537A (en) 1986-09-08
GB2173976A (en) 1986-10-22
SE8600997L (en) 1986-09-07
US4694500A (en) 1987-09-15
SE8600997D0 (en) 1986-03-05
JPH0453334B2 (en) 1992-08-26
FR2578702A1 (en) 1986-09-12
GB2173976B (en) 1989-06-21
SE465344B (en) 1991-08-26
DE3607433A1 (en) 1986-09-11

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Legal Events

Date Code Title Description
ST Notification of lapse